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-rw-r--r--lib/Headers/tgmath.h4
-rw-r--r--test/Modules/compiler_builtins.m4
2 files changed, 5 insertions, 3 deletions
diff --git a/lib/Headers/tgmath.h b/lib/Headers/tgmath.h
index 1b0b9d24c1..554af6cf74 100644
--- a/lib/Headers/tgmath.h
+++ b/lib/Headers/tgmath.h
@@ -30,7 +30,9 @@
/* C++ handles type genericity with overloading in math.h. */
#ifndef __cplusplus
-#include <complex.h>
+#if __has_include(<complex.h>)
+# include <complex.h>
+#endif
#define _TG_ATTRSp __attribute__((__overloadable__))
#define _TG_ATTRS __attribute__((__overloadable__, __always_inline__))
diff --git a/test/Modules/compiler_builtins.m b/test/Modules/compiler_builtins.m
index 5874722c6b..3545604414 100644
--- a/test/Modules/compiler_builtins.m
+++ b/test/Modules/compiler_builtins.m
@@ -1,5 +1,5 @@
// RUN: rm -rf %t
-// RUN: %clang -fsyntax-only -fmodules -fmodule-cache-path %t %s
+// RUN: %clang -fsyntax-only -fmodules -fmodule-cache-path %t %s -Xclang -verify
@import __compiler_builtins.float_constants;
@@ -9,4 +9,4 @@ float getFltMax() { return FLT_MAX; }
char getCharMax() { return CHAR_MAX; }
-//size_t size; // expected-error{{unknown type name 'size_t'}}
+size_t size; // expected-error{{unknown type name 'size_t'}}